<template>
  <div class="box">
    <div class="form">
        <h2>Sign in</h2>
        <div class="inputBox">
            <input type="text" required="required">
            <span>Username</span>
            <i></i>
        </div>
         <div class="inputBox">
            <input type="password" required="required">
            <span>Password</span>
            <i></i>
        </div>
        <div class="links">
            <a href="#">Forgot password</a>
            <a href="#">Signup</a>
        </div>
        <input type="submit" value="Login">
    </div> 
  </div>
</template>

<script>
export default {
    data() {
        return {

        }
    },
    components:{

    },
    watch:{

    },
    computed:{

    },
    created() {

    },
    mounted() {

    },
    methods: {
        
    }
}
</script>

<style scoped>
@import url('http://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700&display=swap');
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body {
    display: flex;
    justify-content: center;
    justify-items: center;
    min-height: 100vh;
    background-color: red;
}
.box {
    position: relative;
    width: 380px;
    height: 420px;
    background: #1c1c1c;
    border-radius: 8px;
    overflow: hidden;
}
.box::before {
    content: "";
    position: absolute;
    top:-50%;    
    left: -50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,#45f3ff,#45f3ff);
    transform-origin: bottom right;
    animation: animate 6s linear infinite;
}
.box::after {
    content: "";
    position: absolute;
    top:-50%;    
    left: -50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,#45f3ff,#45f3ff);
    transform-origin: bottom right;
    animation: animate 6s linear infinite;
    animation-delay: -3s;
}
@keyframes animate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}
.form {
    position: absolute;
    inset: 2px;
    border-radius: 8px;
    background: #28292d;
    z-index: 10;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
}
.form h2{
    color: #45f3ff;
    font-weight: 500;
    text-align: center;
    letter-spacing: 0.1em;
}
.inputBox {
    position: relative;
    width: 300px;
    margin-top: 35px;
} 
.inputBox input {
    position: relative;
    width: 100%;
    padding: 20px 10px 10px;
    background: transparent;
    border: none;
    outline: none;
    color: #23242a;
    font-size: 1em;
    letter-spacing: 0.05em;
    z-index: 10;
}
.inputBox span {
    position: absolute;
    left: 0;
    padding: 20px 0px 10px;
    font-size: 1em;
    color: #8f8f8f;
    pointer-events: none;
    letter-spacing: 0.05em;
    transition: 0.5s;
}
.inputBox input:valid ~ span,
.inputBox input:focus ~ span {
    color: #45f3ff;
    transform: translateX(0px) translateY(-34px);
    font-size: 0.75em;
}
.inputBox i {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: #45f3ff;
    border-radius: 4px;
    transition: 0.5s;
    pointer-events: none;
}
.inputBox input:valid ~ i,
.inputBox input:focus ~ i {
    height: 40px;
}
.links {
    display: flex;
    justify-content: space-between;
}
.links a {
    margin: 10px 0;
    font-size: 0.75em;
    color: #8f8f8f;
    text-decoration: none;
}
.links a:hover,
.links a:nth-child(2) {
    color: #45f3ff;
}
input[type="submit"] {
    border: none;
    outline: none;
    background-color: #45f3ff;
    padding: 11px 25px;
    width: 100px;
    margin-top: 10px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
}
input[type="submit"]:active {
    opacity: 0.8;
}
</style>
